Take a look at just a few of Underground Solutions completed projects and clients



Underground Solutions, Inc. (USI)

Air Excavation/Vacuum Utility Potholing Services


Established in March of 2003, USI now operates state-of-the-art Vacmaster 4000 air excavation/vacuum rigs throughout Southern California. USI services civil engineering firms, utility consulting firms, transportation design firms, water & sewer districts, land & housing developers, general contractors and others. USI holds an “A” General Contracting License (No. 826001) and is fully insured.

Major Project Experience

HDR ConsultingCentral Basin Municipal Water District SWRP Project – (Rio Hondo Water Reclamation Program) USI performed over 100 utility potholes to determine clearance for new pipeline project.

Huitt-Zollar Transportation Design – Ortega Hwy Widening – USI performed over 120 utility potholes for the design of the planned widening of the Ortega Hwy. (#74) from San Juan Capistrano east for approximately 2.5 miles.

City of RiversideSewer Manhole Construction Locations – USI performed approximately 35 pothole investigations for the design of additional sewer manholes to be constructed over existing sewer mains within the City of Riverside (Bid No. AT1593).

Project Design Consultants/SDG&EOMPPA 230kv Underground – USI provided potholing services to clear the locations of approximately 32 vault locations associated with the installation of this new 230 kv power line running from Old Town to South Bay San Diego. Over 100 air/vacuum excavated potholes to 11 ft. depths were performed.

PSOMASVan Buren Blvd. Widening – Riverside – USI performs utility potholing projects for PSOMAS quite regularly. Most recently, USI completed 38 pothole sites for the upcoming widening of Van Buren Blvd. in Riverside.

Typically, USI handles the delineation for USA Digalert, permit acquisition, traffic control, setting of markers for survey purposes and the written reports inclusive of digital pictures and maps. USI has six operating crews and rigs working under the direction of a Field Superintendent and Field Foreman.